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Commercial Contractor Exam questions and correct answers (elaborations) with 100% accurate , verified , latest fully updated , 2024/2025 ,already passed , graded a+, complete solutions guarantee distinctions rationales| 5-star rating
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Commercial Contractor Exam questions and correct answers (elaborations) with 100% accurate , verified , latest fully updated , 2024/2025 ,already passed , graded a+, complete solutions guarantee distinctions rationales| 5-star rating

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  • August 5, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • commercial contractor exam
  • commercial contractor exam questions and correct a

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  • Commercial Construction
  • Commercial Construction

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Commercial Contractor Exam
__________ shall be equipped with an effluent filter designed to handle both the daily flow
volume and wastewater characteristics. - ANS-Outlet tees

___________ shall be located, installed, and constructed so that the temperature of the sewage
will be reduced to encourage congealing or separation of grease and for easy access for
cleaning. - ANS-Grease traps

_____________ will be constructed so a pass-through hole or slot equal to or greater than the
diameter of the inlet pipe is positioned below the liquid surface a minimum of 25% to a
maximum of 50% of the total liquid depth. - ANS-Compartment partitions

_______________ can be accomplished using pumps or siphons. - ANS-Dosing

________________ must be reinforced using 3/8 inch steel reinforcing rods (rebar) which shall
be spaced 12" on center each way extending a minimum of 2.5" and a maximum of 3" from the
outside of the tank lid. - ANS-Tank lids

________________ shall be a minimum of 15 inches free space and a maximum of 24 inches. -
ANS-Access openings

________________ shall be considered to meet the equivalency standard. - ANS-Cast iron

_________________ may be constructed of any of the materials approved for conventional
septic tanks. - ANS-Grease traps

__________________ may be accomplished by using an appropriately sized aerobic treatment
unit (ATU) that has been approved by the department of by using a unit that have been
reviewed by the EPD for that specific application. - ANS-Pretreatment

____________________ must be installed in accordance with the requirements listed in the
manual. - ANS-Riser and lid systems

____________________ the forms or mix may be helpful in eliminating "honeycombing" or
"bridging" in the finished product. - ANS-Vibrating

_____________________ is determined by adding the elevation difference between the lowest
water level in the tank and the elevation of the discharge outlet to the total friction losses that
occur in the pressure piping network. - ANS-Total dynamic head

, ______________________ should be cleaned regularly to prevent clogging. - ANS-Grease
traps

_________________________ are required when total linear length exceeds 1000 ft. -
ANS-Alternating absorption fields

____________________________ of poured in place septic systems shall have a minimum
thickness of 4 inches. - ANS-Walls, bottoms, and lids

Absorption field dosing is required when the total linear length exceeds _____________. -
ANS-500 feet

Additional reinforcement shall be required when the loads on a _________________ are
exceeded by subjecting it to vehicular traffic or when the top of the tank is placed deeper than 3
feet below the finished grade. - ANS-concrete tank

All ______________________________ for systems requiring electrical components should
meet the standards set forth in the Northern Electrical Code. - ANS-wiring and electrical
components

All dosing tanks must have an _________________________ of 60% to 75% the interior
volume of the absorption lines to be closed. - ANS-operating liquid capacity

All dosing tanks shall have ________________ that notify the owner of a malfunction. -
ANS-switches and alarms

All on-site sewage management systems larger than _____________ GPD must be designed
by and shall bear the stamp of an engineer registered in the state of GA. - ANS-2000

All solid pipe used in the installation of on-site sewage disposal systems shall be ___________
or equivalent. - ANS-schedule 40 PVC

All tanks shall be equipped with ______ inch PVC, ASTM 3034 rated or equivalent teens at the
inlet and outlet ends of the tank. - ANS-4

All tanks whether pre-made or constructed on site shall be constructed so the length is at least
______ times the width and shall have ______ compartments. - ANS-1 1/5; 2

Any contractor installing an ATU must be authorized by the ________________. -
ANS-manufacturer

Any facility that produces a waste stream with biological oxygen demand (BOD5) and total
suspended solids (TSS) higher than ___________ shall be required to pretreat the waste to

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